[K12OSN] DVD not umount-ing nor ejecting

[Gavin Chester]

For clarity I should have added that the scenario I describe in my
original posting (below) occurs when mounting a DVD, browsing its
contents in konqueror, closing konqueror and then  trying to umount the
DVD.  Nothing more than that :^(

On Fri, 2005-03-04 at 01:33 +0800, Gavin Chester wrote:
> Anyone using k12ltsp 4.2.0 and having trouble umount-ing and then
> ejecting CDs & DVDs?  I did some googling and after choosing the right
> keywords came across this bug report pertaining to RH9 that seems to
> have persisted through to FC3:     
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=106936
> It very closely matches my scenario, but I've not seen any comment on
> this list about it.  Is it possible that it only affects some types of
> drives? 
> 
> Story:  
> With my new install of k12ltsp 4.2.0 and a new dual-layer DVD (Lite-on
> 16x DVD-R, 4x DVD-R DL) I can mount disks okay but not umount without
> trouble - nor eject the tray at all.  I first resorted to the old paper-
> clip-in-the-emergency-hole trick :^( to get the tray out because neither
> KDE's desktop CD icon nor the command line works as it should to umount
> and eject.  
> 
> Before you ask, nothing is apparently using the media nor looking at it
> (ie, not even a directory listing), so initially I could find nothing to
> account for the "device busy" error when I tried to umount.  After
> googling I found reference to the umount -l option (ie, lazy) to force a
> umount when you don't know what process is keeping the media busy.  This
> worked to umount, but it still persisted with the failure of both
> software and manual attempts to eject the tray.
> 
> After reading the bug report (refer above), it clued me up to look for
> 'fam' (whatever that is) not correctly releasing the DVD.  I found no
> fam, but 'ps aux' did find that konqueror was still active even after
> closing that process and then doing "umount -l".  By trial and error I
> also found "gam_server" was a problem, but have no idea what it is.
> ONLY when I kill those two processes (konq. and gam) can I then eject
> the tray - even though the media is reported as no longer mounted.
> 
> Is this an extension of that original bug report that's been around
> since RH9 or something new?
> Why has it not been reported by anyone else here - might it be unique to
> certain drives?
> Why are those processes not dying when they are closed?
> 
> I now know how to deal with the problem, but it's very tedious to have
> to manually clean up processes to wrest back control of my DVD.
> Feedback welcome.
> 
> Regards, Gavin Chester.
> 
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